public class Test2{
	public static void main(String args[]){
	int sum=0,n,m;
	digui t1 = new digui();
	n=Integer.parseInt(args[0]);
	m=Integer.parseInt(args[1]);
	try{
		sum=t1.C(n,m);
		System.out.println("C("+n+","+m+")="+sum);
	}
	catch(sumException e){
	System.out.println(e.warnMess());
	}
	
	}
}